// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

package api

import "fmt"

var (
	// ErrNoStore is an empty NoStoreErr object, useful for type checking
	ErrNoStore = &NoStoreErr{}
)

// NoStoreErr is the error that no store matching address can be found in PD
type NoStoreErr struct {
	addr string
}

// Error implement the error interface
func (e *NoStoreErr) Error() string {
	return fmt.Sprintf("no store matching address \"%s\" found", e.addr)
}

// Is implements the error interface
func (e *NoStoreErr) Is(target error) bool {
	t, ok := target.(*NoStoreErr)
	if !ok {
		return false
	}

	return e.addr == t.addr || t.addr == ""
}
